Thank you for that Elwyn,
I have found a death and burial record for a Patrick Donnelly who I think might be my great great grandfather. He died in Cullyhanna in August 1870 aged 71 (born c. 1799) and is buried in Newtownhamilton. The death was registered by Bridget Louth (presumably Patrick's daughter who was married to John Louth).
I have also found what I think is the death registration of Mary Donnelly (great great grandmother). She died in Tullynavall in April 1891 aged 85 (born c. 1805). The death was registered by her son Peter which matches my information.
I have found baptism records for 3 of Patrick & Mary's children (Bridget, Peter & Mary). John and Arthur were probably born before 1845 so don't show in the church records.
I am not familiar with the area but from what I have seen, Cullyhanna village lies on the border of the townlands of Cullyhanna Big and Tullynavall. The Patrick in Cullyhanna Big in the Griffith Valuations with a holding in Cullyhanna Big may be a different person to the one who died in 1870 as thie property did not change hands until 1898.
However there is a Patrick Donnelly with holdings in Tullynavall (plot 21 A, B, C) right next to Cullyhanna village and this may be him. This seems more likely looking at the valuation revisions which show these holdings transferring to Peter Donnelly, Arthur Donnelly and also John Louth (presumably the John Louth married to Bridget Donnelly). I am not too sure how to interpret the revision books but all this seems to have happend shortly before and after Patrick's death in 1870.
I don't think I have proved anything but I believe that there is a fair amount of evidence that suggests that the Patrick who died in 1870 and Mary in 1891 are my great great grandparents and that Arthur (who I know from family records is "related") is a son of theirs.
The Tithe Applotments show a Patrick Donnelly in Tullynavall in 1827. This may be the same person or perhaps a previous generation, we may never know!
The Mary Donnelly you mentioned may also be related but I have not been able to find anything that links her. Ther are a number of other Donnellys in the area including a Perer, Terence and Felix who are all close to Patrick in age but again I have not found any direct connections.
Thanks again,
Niamh